/*!
* \file
* <!--
- * Copyright 2003,2004 Develer S.r.l. (http://www.develer.com/)
- * Copyright 2000,2001,2002 Bernardo Innocenti <bernie@codewiz.org>
- * This file is part of DevLib - See devlib/README for information.
+ * Copyright 2003, 2004, 2005 Develer S.r.l. (http://www.develer.com/)
+ * Copyright 2000, 2001, 2002 Bernardo Innocenti <bernie@codewiz.org>
+ * This file is part of DevLib - See README.devlib for information.
* -->
*
- * \brief General pourpose debug functions.
+ * \brief General pourpose debug support for embedded systems (implementation).
*
* \version $Id$
- *
* \author Bernardo Innocenti <bernie@develer.com>
* \author Stefano Fedrigo <aleph@develer.com>
*/
-/*
- * $Log$
- * Revision 1.9 2004/08/02 20:20:29 aleph
- * Merge from project_ks
- *
- * Revision 1.8 2004/07/30 14:26:33 rasky
- * Semplificato l'output dell'ASSERT
- * Aggiunta ASSERT2 con stringa di help opzionalmente disattivabile
- *
- * Revision 1.7 2004/07/30 14:15:53 rasky
- * Nuovo supporto unificato per detect della CPU
- *
- * Revision 1.6 2004/07/18 21:49:28 bernie
- * Add ATmega8 support.
- *
- * Revision 1.5 2004/06/27 15:20:26 aleph
- * Change UNUSED() macro to accept two arguments: type and name;
- * Add macro GNUC_PREREQ to detect GCC version during build;
- * Some spacing cleanups and typo fix
- *
- * Revision 1.4 2004/06/06 18:09:51 bernie
- * Import DSP56800 changes; Print broken wall bricks in hex.
- *
- * Revision 1.3 2004/06/03 11:27:09 bernie
- * Add dual-license information.
- *
- * Revision 1.2 2004/05/23 18:21:53 bernie
- * Trim CVS logs and cleanup header info.
- *
- */
-
-#include "kdebug.h"
-#include "hw.h"
-#include "config.h"
+/*#*
+ *#* $Log$
+ *#* Revision 1.26 2006/04/27 05:40:27 bernie
+ *#* Break on assertion failures.
+ *#*
+ *#* Revision 1.25 2005/06/27 21:26:24 bernie
+ *#* Misc PGM fixes.
+ *#*
+ *#* Revision 1.24 2005/04/12 01:36:37 bernie
+ *#* Add hack to enable TX line at module initialization.
+ *#*
+ *#* Revision 1.23 2005/04/11 19:10:27 bernie
+ *#* Include top-level headers from cfg/ subdir.
+ *#*
+ *#* Revision 1.22 2005/02/18 11:18:33 bernie
+ *#* Fixes for Harvard processors from project_ks.
+ *#*
+ *#* Revision 1.21 2005/02/16 20:29:48 bernie
+ *#* TRACE(), TRACEMSG(): Reduce code and data footprint.
+ *#*
+ *#* Revision 1.20 2005/01/25 08:36:40 bernie
+ *#* kputnum(): Export.
+ *#*
+ *#* Revision 1.19 2004/12/31 17:47:45 bernie
+ *#* Rename UNUSED() to UNUSED_ARG().
+ *#*/
+
+#include <cfg/debug.h>
+#include <cfg/cpu.h>
+#include <cfg/macros.h> /* for BV() */
+#include <appconfig.h>
+#include <hw.h>
#include <mware/formatwr.h> /* for _formatted_write() */
#if defined(_EMUL)
#include <stdio.h>
- #define KDBG_WAIT_READY() do {/*nop*/} while(0)
+ #define KDBG_WAIT_READY() do { /*nop*/ } while(0)
#define KDBG_WRITE_CHAR(c) putchar((c))
- #define KDBG_MASK_IRQ(old) do {/*nop*/} while(0)
- #define KDBG_RESTORE_IRQ() do {/*nop*/} while(0)
+ #define KDBG_MASK_IRQ(old) do { (void)(old); } while(0)
+ #define KDBG_RESTORE_IRQ(old) do { /*nop*/ } while(0)
+ typedef char kdbg_irqsave_t; /* unused */
#elif CPU_I196
#include "Util196.h"
#define KDBG_WAIT_READY() do {} while (!(SP_STAT & (SPSF_TX_EMPTY | SPSF_TX_INT)))
INT_MASK1 &= ~INT1F_TI; \
} while(0)
#define KDBG_RESTORE_IRQ(old) do { INT_MASK1 |= (old); }
+ typedef uint16_t kdbg_irqsave_t; /* FIXME: unconfirmed */
#elif CPU_AVR
#include <avr/io.h>
+
#if CONFIG_KDEBUG_PORT == 0
- /* External 485 transceiver on UART0 (to be overridden in "hw.h"). */
- #if !defined(SER_UART0_485_INIT)
- #if defined(SER_UART0_485_RX) || defined(SER_UART0_485_TX)
- #error SER_UART0_485_INIT, SER_UART0_485_RX and SER_UART0_485_TX must be defined together
- #endif
- #define SER_UART0_485_INIT do {} while (0)
- #define SER_UART0_485_TX do {} while (0)
- #define SER_UART0_485_RX do {} while (0)
- #elif !defined(SER_UART0_485_RX) || !defined(SER_UART0_485_TX)
- #error SER_UART0_485_INIT, SER_UART0_485_RX and SER_UART0_485_TX must be defined together
+ /*
+ * Support for special bus policies or external transceivers
+ * on UART0 (to be overridden in "hw.h").
+ *
+ * HACK: if we don't set TXEN, kdbg disables the transmitter
+ * after each output statement until the serial driver
+ * is initialized. These glitches confuse the debug
+ * terminal that ends up printing some trash.
+ */
+ #ifndef KDBG_UART0_BUS_INIT
+ #define KDBG_UART0_BUS_INIT do { \
+ UCSR0B = BV(TXEN); \
+ } while (0)
+ #endif
+ #ifndef KDBG_UART0_BUS_RX
+ #define KDBG_UART0_BUS_RX do {} while (0)
+ #endif
+ #ifndef KDBG_UART0_BUS_TX
+ #define KDBG_UART0_BUS_TX do {} while (0)
#endif
- #if defined(__AVR_ATmega64__)
+ #if CPU_AVR_ATMEGA64 || CPU_AVR_ATMEGA128
#define UCR UCSR0B
#define UDR UDR0
#define USR UCSR0A
- #elif defined(__AVR_ATmega8__)
+ #elif CPU_AVR_ATMEGA8
#define UCR UCSRB
#define USR UCSRA
+ #else
+ #error Unknown CPU
#endif
#define KDBG_WAIT_READY() do { loop_until_bit_is_set(USR, UDRE); } while(0)
#define KDBG_WAIT_TXDONE() do { loop_until_bit_is_set(USR, TXC); } while(0)
+
/*
- * BUG: before sending a new character the TXC flag is cleared to allow
- * KDBG_WAIT_TXDONE() to work properly, but, if KDBG_WRITE_CHAR() is called
- * after the RXC flag is set by hardware, a new TXC could be generated
- * after we clear it and before the new character is put in UDR. In this
- * case if a 485 is used the transceiver will be put in RX mode while
- * transmitting the last char.
+ * We must clear the TXC flag before sending a new character to allow
+ * KDBG_WAIT_TXDONE() to work properly.
+ *
+ * BUG: if KDBG_WRITE_CHAR() is called after the TXC flag is set by hardware,
+ * a new TXC could be generated after we've cleared it and before the new
+ * character is written to UDR. On a 485 bus, the transceiver will be put
+ * in RX mode while still transmitting the last char.
*/
#define KDBG_WRITE_CHAR(c) do { USR |= BV(TXC); UDR = (c); } while(0)
#define KDBG_MASK_IRQ(old) do { \
- SER_UART0_485_TX; \
(old) = UCR; \
UCR |= BV(TXEN); \
UCR &= ~(BV(TXCIE) | BV(UDRIE)); \
+ KDBG_UART0_BUS_TX; \
} while(0)
#define KDBG_RESTORE_IRQ(old) do { \
KDBG_WAIT_TXDONE(); \
- SER_UART0_485_RX; \
+ KDBG_UART0_BUS_RX; \
UCR = (old); \
} while(0)
+ typedef uint8_t kdbg_irqsave_t;
+
#elif CONFIG_KDEBUG_PORT == 1
- /* External 485 transceiver on UART1 (to be overridden in "hw.h"). */
- #ifndef SER_UART1_485_INIT
- #if defined(SER_UART1_485_RX) || defined(SER_UART1_485_TX)
- #error SER_UART1_485_INIT, SER_UART1_485_RX and SER_UART1_485_TX must be defined together
- #endif
- #define SER_UART1_485_INIT do {} while (0)
- #define SER_UART1_485_TX do {} while (0)
- #define SER_UART1_485_RX do {} while (0)
- #elif !defined(SER_UART1_485_RX) || !defined(SER_UART1_485_TX)
- #error SER_UART1_485_INIT, SER_UART1_485_RX and SER_UART1_485_TX must be defined together
+ /*
+ * Support for special bus policies or external transceivers
+ * on UART1 (to be overridden in "hw.h").
+ *
+ * HACK: if we don't set TXEN, kdbg disables the transmitter
+ * after each output statement until the serial driver
+ * is initialized. These glitches confuse the debug
+ * terminal that ends up printing some trash.
+ */
+ #ifndef KDBG_UART1_BUS_INIT
+ #define KDBG_UART1_BUS_INIT do { \
+ UCSR1B = BV(TXEN); \
+ } while (0)
+ #endif
+ #ifndef KDBG_UART1_BUS_RX
+ #define KDBG_UART1_BUS_RX do {} while (0)
+ #endif
+ #ifndef KDBG_UART1_BUS_TX
+ #define KDBG_UART1_BUS_TX do {} while (0)
#endif
#define KDBG_WAIT_READY() do { loop_until_bit_is_set(UCSR1A, UDRE); } while(0)
#define KDBG_WRITE_CHAR(c) do { UCSR1A |= BV(TXC); UDR1 = (c); } while(0)
#define KDBG_MASK_IRQ(old) do { \
- SER_UART1_485_TX; \
(old) = UCSR1B; \
UCSR1B |= BV(TXEN); \
UCSR1B &= ~(BV(TXCIE) | BV(UDRIE)); \
+ KDBG_UART1_BUS_TX; \
} while(0)
#define KDBG_RESTORE_IRQ(old) do { \
KDBG_WAIT_TXDONE(); \
- SER_UART1_485_RX; \
+ KDBG_UART1_BUS_RX; \
UCSR1B = (old); \
} while(0)
+ typedef uint8_t kdbg_irqsave_t;
#else
#error CONFIG_KDEBUG_PORT should be either 0 or 1
#endif
/* Debugging go through the JTAG interface. The MSL library already
implements the console I/O correctly. */
#include <stdio.h>
- #define KDBG_WAIT_READY()
- #define KDBG_WRITE_CHAR(c) do { char ch=c; fwrite(&ch,1,1,stdout); } while (0)
- #define KDBG_MASK_IRQ(old)
- #define KDBG_RESTORE_IRQ(old)
+ #define KDBG_WAIT_READY() do { } while (0)
+ #define KDBG_WRITE_CHAR(c) __put_char(c, stdout)
+ #define KDBG_MASK_IRQ(old) do { (void)(old); } while (0)
+ #define KDBG_RESTORE_IRQ(old) do { (void)(old); } while (0)
+ typedef uint8_t kdbg_irqsave_t; /* unused */
#else
#error Unknown architecture
#endif
/* Compute the baud rate */
uint16_t period = (((CLOCK_FREQ / 16UL) + (CONFIG_KDEBUG_BAUDRATE / 2)) / CONFIG_KDEBUG_BAUDRATE) - 1;
- #if defined(__AVR_ATmega64__)
+ #if CPU_AVR_ATMEGA64 || CPU_AVR_ATMEGA128
#if CONFIG_KDEBUG_PORT == 0
UBRR0H = (uint8_t)(period>>8);
UBRR0L = (uint8_t)period;
- SER_UART0_485_INIT;
+ KDBG_UART0_BUS_INIT;
#elif CONFIG_KDEBUG_PORT == 1
UBRR1H = (uint8_t)(period>>8);
UBRR1L = (uint8_t)period;
- SER_UART1_485_INIT;
+ KDBG_UART1_BUS_INIT;
#else
#error CONFIG_KDEBUG_PORT must be either 0 or 1
#endif
- #elif defined(__AVR_ATmega8__)
+ #elif CPU_AVR_ATMEGA8
UBRRH = (uint8_t)(period>>8);
UBRRL = (uint8_t)period;
- #elif defined(__AVR_ATmega103__)
+ #elif CPU_AVR_ATMEGA103
UBRR = (uint8_t)period;
- SER_UART0_485_INIT;
+ KDBG_UART0_BUS_INIT;
#else
- #error Unknown arch
+ #error Unknown CPU
#endif
#endif /* !CPU_I196 && !CPU_AVR */
/*!
* Output one character to the debug console
*/
-static void kputchar(char c, UNUSED(void *, unused))
+static void __kputchar(char c, UNUSED_ARG(void *, unused))
{
/* Poll while serial buffer is still busy */
KDBG_WAIT_READY();
}
-void PGM_FUNC(kprintf)(const char * PGM_ATTR fmt, ...)
+void kputchar(char c)
{
- va_list ap;
+ /* Mask serial TX intr */
+ kdbg_irqsave_t irqsave;
+ KDBG_MASK_IRQ(irqsave);
+ __kputchar(c, 0);
+
+ /* Restore serial TX intr */
+ KDBG_RESTORE_IRQ(irqsave);
+}
+
+
+static void PGM_FUNC(kvprintf)(const char * PGM_ATTR fmt, va_list ap)
+{
+#if CONFIG_PRINTF
/* Mask serial TX intr */
- unsigned char irqsave;
+ kdbg_irqsave_t irqsave;
KDBG_MASK_IRQ(irqsave);
- va_start(ap, fmt);
- PGM_FUNC(_formatted_write)(fmt, kputchar, 0, ap);
- va_end(ap);
+ PGM_FUNC(_formatted_write)(fmt, __kputchar, 0, ap);
/* Restore serial TX intr */
KDBG_RESTORE_IRQ(irqsave);
+#else
+ /* A better than nothing printf() surrogate. */
+ PGM_FUNC(kputs)(fmt);
+#endif /* CONFIG_PRINTF */
}
+void PGM_FUNC(kprintf)(const char * PGM_ATTR fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ PGM_FUNC(kvprintf)(fmt, ap);
+ va_end(ap);
+}
void PGM_FUNC(kputs)(const char * PGM_ATTR str)
{
char c;
/* Mask serial TX intr */
- unsigned char irqsave;
+ kdbg_irqsave_t irqsave;
KDBG_MASK_IRQ(irqsave);
while ((c = PGM_READ_CHAR(str++)))
- kputchar(c, 0);
+ __kputchar(c, 0);
KDBG_RESTORE_IRQ(irqsave);
}
-int PGM_FUNC(__assert)(const char * PGM_ATTR cond, const char *file, int line)
+/*!
+ * Cheap function to print small integers without using printf().
+ */
+int kputnum(int num)
+{
+ int output_len = 0;
+ int divisor = 10000;
+ int digit;
+
+ do
+ {
+ digit = num / divisor;
+ num %= divisor;
+
+ if (digit || output_len || divisor == 1)
+ {
+ kputchar(digit + '0');
+ ++output_len;
+ }
+ }
+ while (divisor /= 10);
+
+ return output_len;
+}
+
+
+static void klocation(const char * PGM_ATTR file, int line)
{
PGM_FUNC(kputs)(file);
- PGM_FUNC(kprintf)(PSTR(":%d: Assertion failed: "), line);
+ kputchar(':');
+ kputnum(line);
+ PGM_FUNC(kputs)(PGM_STR(": "));
+}
+
+int PGM_FUNC(__assert)(const char * PGM_ATTR cond, const char * PGM_ATTR file, int line)
+{
+ klocation(file, line);
+ PGM_FUNC(kputs)(PGM_STR("Assertion failed: "));
PGM_FUNC(kputs)(cond);
- PGM_FUNC(kputs)(PSTR("\n"));
+ kputchar('\n');
+ BREAKPOINT;
return 1;
}
+/*
+ * Unfortunately, there's no way to get __func__ in
+ * program memory, so we waste quite a lot of RAM in
+ * AVR and other Harvard processors.
+ */
+void PGM_FUNC(__trace)(const char *name)
+{
+ PGM_FUNC(kprintf)(PGM_STR("%s()\n"), name);
+}
+
+void PGM_FUNC(__tracemsg)(const char *name, const char * PGM_ATTR fmt, ...)
+{
+ va_list ap;
+
+ PGM_FUNC(kprintf)(PGM_STR("%s(): "), name);
+ va_start(ap, fmt);
+ PGM_FUNC(kvprintf)(fmt, ap);
+ va_end(ap);
+ kputchar('\n');
+}
int PGM_FUNC(__invalid_ptr)(void *value, const char * PGM_ATTR name, const char * PGM_ATTR file, int line)
{
- PGM_FUNC(kputs)(file);
- PGM_FUNC(kprintf)(PSTR(":%d: Invalid pointer: "), line);
+ klocation(file, line);
+ PGM_FUNC(kputs)(PGM_STR("Invalid ptr: "));
PGM_FUNC(kputs)(name);
- PGM_FUNC(kprintf)(PSTR(" = 0x%x\n"), value);
+ #if CONFIG_PRINTF
+ PGM_FUNC(kprintf)(PGM_STR(" = 0x%x\n"), (unsigned int)value);
+ #else
+ (void)value;
+ kputchar('\n');
+ #endif
return 1;
}
}
-int __check_wall(long *wall, int size, const char *name, const char *file, int line)
+int PGM_FUNC(__check_wall)(long *wall, int size, const char * PGM_ATTR name, const char * PGM_ATTR file, int line)
{
int i, fail = 0;
{
if (wall[i] != WALL_VALUE)
{
- kprintf("%s:%d: Wall broken: %s[%d] (0x%p) = 0x%lx\n",
- file, line, name, i, wall + i, wall[i]);
+ klocation(file, line);
+ PGM_FUNC(kputs)(PGM_STR("Wall broken: "));
+ PGM_FUNC(kputs)(name);
+ #if CONFIG_PRINTF
+ PGM_FUNC(kprintf)(PGM_STR("[%d] (0x%p) = 0x%lx\n"), i, wall + i, wall[i]);
+ #else
+ kputchar('\n');
+ #endif
fail = 1;
}
}
}
+#if CONFIG_PRINTF
+
/*!
* Dump binary data in hex
*/
while (len--)
kprintf("%02X", *buf++);
- kputs("\n");
+ kputchar('\n');
}
+#endif /* CONFIG_PRINTF */
+
#endif /* _DEBUG */
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